Use jQuery to easily delete the last child element: detailed steps

Title: Simple and easy-to-understand jQuery example: steps to delete the last child element

In web development, it is often necessary to operate DOM elements, including deleting elements. is a common operation. This article will introduce how to use jQuery to delete the last child element in an element and provide specific code examples.

The implementation steps are as follows:

1. Ensure that the jQuery library is introduced into the page, which can be introduced through a CDN link or locally.
2. Write the HTML structure and create a parent element containing child elements. The sample code is as follows:

<div id="parentElement">
    <p>子元素1</p>
    <p>子元素2</p>
    <p>子元素3</p>
</div>

3. Use the jQuery selector to select the parent element, and then use children () method selects the last child element, and determines the last child element through the last() method. The code example is as follows:

$("#parentElement").children().last().remove();

In the above code , $("#parentElement").children().last()selects all child elements under the parent element #parentElement, and uses last()The method selects the last child element, and finally uses the remove() method to remove it from the DOM.

4. Write a complete HTML file and integrate the above code together:

    
    


    

        
子元素1
        
子元素2
        
子元素3
    

    <script>
        $(document).ready(function() {
            $(&quot;#parentElement&quot;).children().last().remove();
        });
    </script>

Through the above steps, we successfully implemented the use of jQuery to delete the last child in an element The function of the element. This example is simple and easy to understand, and is suitable for beginners to quickly master the basic methods of jQuery operating DOM elements. We hope that readers can use the guidance of this article to become more proficient in using jQuery to operate page elements and improve development efficiency.

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